/*
 * Copyright [2022-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package me.ahoo.coapi.spring.client.reactive.auth

import org.springframework.http.HttpHeaders

class BearerTokenFilter(tokenProvider: ExpirableTokenProvider) :
    HeaderSetFilter(
        headerName = HttpHeaders.AUTHORIZATION,
        headerValueProvider = tokenProvider,
        headerValueMapper = BearerHeaderValueMapper
    )

object BearerHeaderValueMapper : HeaderValueMapper {
    private const val BEARER_TOKEN_PREFIX = "Bearer "
    fun String.withBearerPrefix(): String {
        return "$BEARER_TOKEN_PREFIX$this"
    }

    override fun map(headerValue: String): String {
        return headerValue.withBearerPrefix()
    }
}
